JPH0275062A - Transaction processor - Google Patents

Abstract

PURPOSE:To prevent the illegal read-out of a memory card storing the personal credit information by ciphering and storing the memory card and furthermore to reduce the danger for the illegal read-out of data by keeping a card type memory medium and a transaction processor separately from each other. CONSTITUTION:The customer information and the sales data are transmitted via a communication control means 4 when the sales amount exceeds a prescribed level and then stored in a memory medium 10 when the sales amount is less than the prescribed level respectively. Then the stored data are transmitted en bloc via the means 4 when the stored items exceed a prescribed number. A 1st ciphering means 8a ciphering the customer information and the sales data when they are stored in the medium 10, a 2nd ciphering means 8b ciphering the data inputted to the means 4 are provided. Thus it is possible to prevent the read-out of the stored contents of the medium 10 even though the loadable/ unloadable card type medium 10 is illegally taken out of a transaction processor main body.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a transaction processing device used for the sale of goods, and particularly to a transaction processing device that can protect the confidentiality of transaction details.

[Prior art] When selling goods using credit cards, credit cards, etc., the transaction processing unit installed at the terminal sends sales-L data to the credit card company at the center, but the sales -1 degree per sale is If the amount is less than or equal to a predetermined amount, the sales data is stored in the storage section of the device along with the personal credit information, and the data is stored until the number of stored sales reaches a predetermined number (for example, 50). tanking) and exceeds this predetermined number,
It is then sent all at once to the center.

[Problems to be Solved by the Invention] Although the above method has the advantage of increasing efficiency, if the inside of the transaction processing device is illegally opened due to theft etc., the stored information is read from the memory and personal There was a problem in which the confidentiality of credit information could not be protected.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a transaction processing device that can protect the confidentiality of personal credit information.

[Means for Solving the Problems] In order to achieve the above [J objective, the transaction processing device of the present invention has the following features:
The input sales amount is determined, and when the sales amount is below a predetermined amount, customer information and sales-Low data are transmitted from the communication control means, and when the sales-L amount is less than a predetermined amount, the customer information is transmitted. information and sales data are stored in a storage medium, the number of stored items is counted, and when the number of items is greater than or equal to a predetermined number, the data stored in the storage medium is read out and the data is transmitted all at once from the communication control means. A transaction processing device comprising: a first encryption means for encrypting the customer information and sales data when stored in the storage medium; and a second encryption means for encrypting data input to the communication control means. The device is characterized in that it has a means to prevent unauthorized data reading.

[Function] ■- To explain the function of the above configuration, even if the removable card-type storage medium (10) is illegally removed from the main body, it can be stored with different encryption depending on the transaction processing device. This prevents the memory contents from being read.

[Example] FIG. 2 is a configuration diagram showing an embodiment of the same device.

As shown in FIG. 2, a customer's credit card 1 is read by a card reader 2a, and a sales amount is entered from a keyboard 2b integrated with the card reader 2 and displayed on a display 7.

The input of the sales amount is processed as described below by the CPU 12 operating according to a program stored in the R2M 17, and is transmitted from the communication control means 4 to the center 6 via the line 5.

FIG. 1 is a functional block diagram showing the main parts of the first embodiment of the transaction processing device of the present invention.
2 will do it.

The amount determining means 3a determines whether the input amount each time is less than 2,000 yen, and if the amount is greater than or equal to this amount, the amount determination means 3a transmits the sales data from the subsequent communication control means 4 to the line. 5
The data is sent to the center 6 via. Further, when the amount is less than or equal to the predetermined amount, the zero item count determining means 3b outputs the sales data to the first encryption means 8a in order to tank it in the memory card 10. Control is performed such that the numbers are added and stored in a card-type storage medium 10, which will be described later, until a predetermined number (for example, 50) is reached.

Furthermore, the data on the line 5 is encrypted and transmitted by the second encryption means 8b, and is decrypted by the first decryption means 7a provided in the center 6, so that the confidentiality on the line 5 is protected. There is.

The first encryption means 8& is, for example, the input amount? It operates when the amount is less than 1,000 yen, and encrypts personal information and amount, which are input data that requires secrecy other than information for controlling communication with the center.

The writing means 9 sequentially writes the input data into a card-type storage medium 10.

The card-type storage medium IO is constituted by a memory card, and as shown in the perspective view of FIG.
When the memory card 10 is installed, the connector 10a of the memory card 10 is inserted into the connector 30e of the main body 30 and electrically connected.

The number of stitches determining means 3b accumulates the total number of tanking data for each sale, and when the predetermined number of items have been tanked, the reading means 11 is activated to read out the stored contents from the memory card 10 and control communication. Output to means 4.

Therefore, tanking data is transmitted to the center 6 when the number of tanking data reaches a predetermined amount.

At this time, the data stored in the memory card 10 has already been encrypted by the first encryption means 8a, and at the time of transmission, it is encrypted by the second encryption stage 8b and transmitted. . Therefore, on the center 6 side, in addition to the first decoding stage 7a that decodes the received code, a second decryption means 7b that decodes the code of the memory card IO is provided. The operation of the above-mentioned components is shown in the flowchart of FIG.

By the way, when the removable memory card 10 is removed from the main body of the apparatus, it is impossible to determine whether or not it was removed intentionally.

However, even if you intentionally take out only the memory card 10 from the main body of the device and try to read its contents, the data in the memory card 10 is encrypted by the first encryption means 8a, so the contents cannot be decoded. It is possible to protect the confidentiality of one individual's credit information.

Next, FIG. 5 is a block diagram of a second embodiment of the transaction processing apparatus of the present invention.

In the same embodiment, the same components as in the previous embodiment include:
The same reference numerals will be given and the explanation will be omitted.

In this embodiment, a first decryption stage 7b for decrypting data encrypted by the first encryption means 8a is provided within the transaction processing device. As a result, as shown in the flowchart of FIG. When reading, the encrypted tanking data is decrypted by the first decryption-1 stage.

According to the first and second embodiments, even if the memory card 10 is removed from the main body of the device and an attempt is made to illegally read out the information, the information is encrypted, so the confidential contents can be maintained.

In addition, the tjIjl encryption means and the second encryption means are separated by the device, and the center decrypts the first decryption by the device and address signal or device password included in the communication control signal transmitted by the device. It is also possible to switch the decoding means and the second decoding means to those of the corresponding device.

Further, in the above embodiment, a memory card was explained as a card-type storage medium, but an IC card may also be used.Furthermore, although the embodiment has a structure that can be attached to and detached from the main body of the device, it is possible to use a RAM fixed to one main body. Similar effects can be obtained even with storage means such as .

[Effects of the Invention] As explained above, according to the transaction processing device of the present invention,
Memory cards that store personal credit information are encrypted and stored, and this device and a center are required to decrypt them, so they cannot be read out illegally, and even if the memory card is stolen. , Since the encryption method differs depending on the device, data cannot be read illegally using another device, and since encryption and passwords are used, data cannot be read illegally from the line.
In other words, unless the memory card and this device are stolen at the same time, the data cannot be read out illegally.For this reason, the storage medium is a card type, and by storing the device and card separately, the risk of unauthorized data reading can be prevented. , it is possible to protect the confidentiality of memory contents.

[Brief explanation of the drawing]

FIG. 1 is a functional block diagram showing a first embodiment of the transaction processing device of the present invention, FIG. 2 is a diagram showing each component of the device, and FIG. 3 is a card type storage medium of the present invention. FIG. 4 is a flowchart showing the operation according to the first embodiment, FIG. 5 is a functional block diagram showing the second embodiment of the transaction processing device of the present invention, and FIG. The figure is a flowchart showing the operation according to the second embodiment. l...card, 2a...card league, 2b...
Keyboard, 3a... 1 Amount judgment means, 3b... Number judgment f-stage, 4... Communication control means, 5... Line,
6... Center, 7a... First decoding means, 7b.
...Second decryption means, 8a...First encryption means,
8b--Second encryption means, 9-Writing means, l
O...Card-type storage medium (memory card), lOa
... connector, 11 ... reading means, 30 ... main body, 30b ... slot, 30e ... connector.

Claims (1)

[Claims] The input sales amount is determined, and when the sales amount is greater than or equal to a predetermined amount, customer information and sales data are transmitted from the communication control means, and when the sales amount is less than a predetermined amount, customer information and sales data are transmitted to the customer. information and sales data are stored in a storage medium, the number of stored items is counted, and when the number of items is greater than or equal to a predetermined number, the data stored in the storage medium is read out and the data is transmitted all at once from the communication control means. A transaction processing device comprising: a first encryption means for encrypting the customer information and sales data when stored in the storage medium; and a second encryption means for encrypting data input to the communication control means. A transaction processing device comprising means for preventing unauthorized data reading.